/*
 * Copyright 2002-2012 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.springframework.scheduling.commonj;

import commonj.timers.Timer;
import commonj.timers.TimerListener;

import org.springframework.util.Assert;

/**
 * Simple TimerListener adapter that delegates to a given Runnable.
 *
 * @author Juergen Hoeller
 * @see commonj.timers.TimerListener
 * @see java.lang.Runnable
 * @since 2.0
 */
public class DelegatingTimerListener implements TimerListener {

    private final Runnable runnable;


    /**
     * Create a new DelegatingTimerListener.
     *
     * @param runnable the Runnable implementation to delegate to
     */
    public DelegatingTimerListener(Runnable runnable) {
        Assert.notNull(runnable, "Runnable is required");
        this.runnable = runnable;
    }


    /**
     * Delegates execution to the underlying Runnable.
     */
    @Override
    public void timerExpired(Timer timer) {
        this.runnable.run();
    }

}
